首页|Photocatalytic oxidation of ceftiofur sodium under UV-visible irradiation using plasmonic porous Ag-TiO2 nanospheres

Photocatalytic oxidation of ceftiofur sodium under UV-visible irradiation using plasmonic porous Ag-TiO2 nanospheres

扫码查看
原文链接
  • NSTL
  • Elsevier
In this study, 250 nm sized porous anatase TiO2 nanospheres (TiO2 NSPs) composed of similar to 10 nm sized anatase TiO2 nanoparticles are obtained through a green synthetic route and their surfaces have been decorated with 3-4 nm sized plasmonic silver nanoparticles (AgNPs). Photoluminescence studies confirm that the AgNPs presence on TiO2 NSPs surface effectively inhibits the radiative charge recombination and thus facilitates charge separation process at the Ag-TiO2 NSPs interface, causing an enhanced photocatalytic activity. About 92% of the ceftiofur sodium (CFS) antibiotic taken initially is oxidized by Ag-TiO2 NSPs upon 90 min white light irradiation, while Ag loaded Degussa P25 TiO2 nanoparticles effects only 71% CFS oxidation. The synergistic effect given by plasmonic AgNPs and the continuous framework of anatase TiO2 NPs contributes to inhibit the electron-hole recombination in the Ag-TiO2 NSPs. Oxidation products of CFS in different water sources and their eco-toxicity effects identified through LC-MS and microtoxbioassays, respectively, indicate that the obtained oxidation products are non-toxic compared to pure CFS. Therefore, porous Ag-TiO2 NSPs could be successfully applied in photocatalytic oxidation technologies, exploiting sunlight for the effective removal of pharmaceutical pollutants from wastewater. (C) 2021 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

Plasmonic AgNPsPhotocatalytic oxidation of ceftiofur sodiumHydroxyl radicalsPorous TiO2 nanospheresEco-toxicity assayTIO2 PHOTOCATALYSISSOLVOTHERMAL SYNTHESISFACILE SYNTHESISVIBRIO-FISCHERIDEGRADATIONANATASENANOPARTICLESECOTOXICITYANTIBIOTICSTOXICITY

Pugazhenthiran, N.、Murugesan, S.、Valdes, H.、Selvaraj, M.、Sathishkumar, P.、Smirniotis, P. G.、Anandan, S.、Mangalaraja, R. V.

展开 >

Madurai Kamaraj Univ

Univ Catolica Santisima Concepcion

King Khalid Univ

Vellore Inst Technol

Univ Cincinnati

Natl Inst Technol

Univ Concepcion

展开 >

2022

10.1016/j.jiec.2021.09.038

Journal of industrial and engineering chemistry

Journal of industrial and engineering chemistry

EISCI
ISSN：1226-086X
年,卷(期)：2022.105
  • 4
  • 64